Warp stop-motion



4 J. REGAN. WARP STOP MOTION.

' APPLICATION FILED SEPT-21,1917

Patented June 17, 1919.

2 SHEETSSHEET 1.

' J. REGAN.

' WARP STOP M'OTION.

APPLICATION FILED SEPT-21, 1911.

Patented June 17, 1919.

I 2 SHEETSSHEET 2 LEUKZZ.

:i an in.

JOHN REGAN, OF NEW BEDFOIRID, MASSACHUSETTS, ASSIGNOR T0 CBOIVIPTON & KNOWLES LOOM WORKS, 013' WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

WARP STOP-MOTION.

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Specification of Letters Patent.

Patented June 1?, 1919.

To all whom it may concern:

Be it known that I, JOHN REGAN, a citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and useful WVarp Stop-Motion, of which the following is a specification.

This invention relates to a warp stop motion of the type shown and described in my prior application, Serial No..160,276, filed April 6, 1917. I

It is the general object of my present invention to improve the details of construction of the warp stop motion therein shown and particularly to provide a warp stop motion of the same general type, but in which the controlling rod does-not extend through the drop wires. A further object is to provide a construction in which a single controllingrod may be used with two banks of drop wires.

With these objects in view, my invention relates to certain arrangements and combinations of parts which will be hereinafter described and moreparticularly pointed out in the appended claims.

A preferred form of my invention and certain modifications thereof are shown in the drawings, in which Figure 1 is an end elevation showing the actuating mechanism for my improved stop motion;

Fig. 2 is a front elevation of the parts shown in Fig. 1, looking in the direction of the arrow 2 in Fig. 1;

Fig. 3 is a detail of the frame construction of the stop motion;

Fig. 4 is a sectional view taken along the line 4:4: in Fig. 2; and

Figs. 5 and 6 are views similar to Fig. 4. but showing modified forms of the drop wires and controlling rod.

Referring particularly to Figs. 1 and 2, I have shown a stop motion and actuating mechanism therefor, the latter being of the general type found in the patent to Wyman, No. 665,713 issued January 8, 1901. The stop motion comprises end frame members 10 adj ustably mounted ppon supporting rods 11 and connected by rectangular spacing bars 12. The ends of the bars 12. are received, in pockets 13 (Fig. 3) formed in the inner faces of the end frame members 10. By this construction the expense of manufacture 1s mater1ally reduced and the bars 12 may be readily removed or replaced.

, operative movement between two adjacent banks of drop wires. \Vith the mechanism shown in the drawings such movement is an oscillating movement and is secured by the following described mechanism.

The ends of the rod 20, which is preferably of non-circular cross section, are received in bearing blocks 21 fitted in openings in the frame members 10, and one of said bearing blocks is provided with a clownwardly extending arm 22 having a stud 23 in its lower end. The stud 23 extends through a slot 24 in the lower end of a lever 25 pivoted on a stud 26 carried by a. bell crank 27 supported on a fixed bearing 28. The upper end of the lever 25 has a stud 29 which is connected by a link 30 to devices (not shown) for controlling the loom stopping mechanism.

The bell crank 27 is connected by a link 31 to suitable operating mechanism by which it is oscillated about its bearing 28, and it is also yieldingly connected to the lever 25 by a. spring-pressed plunger 32. The bell crank 27 and lever 25 normally swing in unison about the axis of the bearing 28, thus swinging the arm 22 and rocking the bearing 21 of the controlling rod 20.

The stud 29 is normally alincd with the bearing 28 of the bell crank 27 and the Connection 30 thus receives no operative movement.

The drop wires 15 (Fig. are provided with widened portions 15" so designed that a fallen drop wire will have its widened portion positioned adjacent the controller 20. thereby preventing oscillation thereof. hen such oscillation is prevented the lever 25 thereafter swings about the stud 23 as a. pivot and the resultant movement of the stud 29 in the upper end of the lever acts through the connection 30' to render the loom stopping mechanism operative.

With the mechanism described a single controlling rod may be rendered operative by any drop wire in two adjacent banks of wires. lVhile I have shown only two banks of wires herein it will be understood that my invention is equally applicable to any number of banks of wires.

In Fig. 5 I have shown a construction substantially similar to that shown in Fig.

4, but using a modified form of controlling rod 20 in which the rod is provided with an upwardly projecting portion of T-shaped cross section. The use and operation of this form of the device is identical with that previously described. I

In the construction shown in Fig. 6, the controlling rod 20 is similar in construction to that shown in Fig. 5, but is of somewhat larger dimensions and is mounted in place of the middle spacing bar 12. The drop wires 40 used in this construction are also of a different form. No projections are provided at the upper ends of these drop wires, but the drop wires are cut away to provide narrowed portions 40" near their lower ends, which portions permit the controller to oscillate as shown in Fig. 6when the wires are in normal position. Whenever one of the wires is dropped by the breaking of a warp thread the wider portion of the wire prevents further oscillation of the controller and thus 'auses the stopping of the loom.. p

When a stop motion of this type is applied to a. wide loom, it is desirable that provision be made for retaining the several parts in their proper spaced relation throughout their entire length. For this purpose I provide the clamp shown in Figs. 2 and l. comprising a. stand 40, upper and lower clamping bars 41 and 42, a threaded link 43, and a. wingnut 44. lhe bars 4:]. and 12 are pivoted to the stand 40, the bar 42 engaging the lower edges of the spacing bars 12. The stand 10 rests upon the upper edges of the bars 12 and the clamping bar 4T1 engages an upward projectionof the stand 40. Pressure applied by the link 43 and nut all thus acts through the bar 41 to clamp the parts 40 and 12 firmly to the spacing bars 12. The parts 40 and d1 are cut away to provide clearance for the rods 16 and 20 while at the same time maintaining the general position thereof. The link i3 extends loosely through a holein the bar 41 and is provided with a loop at its lower end detachably engaging a hook on the end of the bar a Having thus described several forms of my invention, it will be evident that further changes and modifications may be made therein by those skilled in the art without departing'from the spirit and scope of the invention as expressed in the claims. Therefore I do not wish to be otherwise limited to the details herein disclosed, but what I claim is- 1. A warp stop motion comprising a plurality of elongated drop wires mounted for straight vertical indicating movement, loom stopping mechanism, a. controller for said mechanism positioned adjacent but wholly outside of said drop wires, and means to move said controller abouta longitudinal axis thereof, said drop wires each having a narrow portion adjacent said controller and permitting free movement thereby when the wire is supported by a warp thread and eachdiaving a wider portion effective to engage said controller and prevent such movement when the drop wire is released, whereby said loom stopping mechanism is rendered operative.

2. A warp stop motion comprising loom stopping mechanism, a controller for said mechanism, means to move said controller about a longitudinal axis thereof, and a plurality of elongated drop wires mounted for free vertical indicating movement, said drop wires each having a portion cut away from one outer vertical edge thereof to provide clearance for said controller when the drop wire is supported by a weft thread and having a portion of normal width efiective to engage said controller and prevent movement thereof when the drop wire is in the position which it assumes after the breaking of said warp thread.

3. A warp stop motion including loom stopping mechanism. a controller for said mechanism, and a plurality of drop wires.

arranged in parallel banks, said controller being positioned between adjacent banks of drop, wires and having a detecting move ment, and said drop wires of both adjacent banks having narrow portions normally permitting'suclrmoven'ient and having wider 'portionsefi'ective to prevent such movement when a drop wire is released by a broken warp thread.

4. A warp stop motion comprising a controller, end frames, bearings in said frames for said controller, a plurality of drop wires and spacing bars for said drop wires, said bars being of rectangular cross section and said end frames having pockets therein formed to separately receive andsupport said rectangular spacing bars and permitting unobstructed removal of each bar independently.

5. In a warp stop motion, a plurality of spacing bars, and a positioning device therefor detachably supported thereby and comprising a stand, upper and lower clamping bars pivotally connected to said stand, a

threaded link connecting said bars, and a.

' 6. In a, warp stop motion, a plurality of spacing; bars and apositioning device therefo detachably supported thereby and comprising'e stand, upper and lower clamping 5 bars pivotirlly connected-t0 said stand, a threaded link detachably Ieonnected t0 the lower flier and extending laterally through fixed my signature.

opening in the upper bar, anda nut for sa-id'li'nk, said link and nut being effective to elnmp said. positioning- .device firmly in posltlon-on said spacmg bars.

In testlniony whereof I have hereunto af- JOHN REGAN. 

